An Approach for Lighting Calculations in Indoor Mirrored Facilities Based on Virtual Twin-Spaces
Metadatos
Mostrar el registro completo del ítemEditorial
MDPI
Materia
Indoor lighting Lumen method Lighting simulation Required illuminance
Fecha
2022-09-20Referencia bibliográfica
Peña-García, A. An Approach for Lighting Calculations in Indoor Mirrored Facilities Based on Virtual Twin-Spaces. Sustainability 2022, 14, 11837. [https://doi.org/10.3390/su141911837]
Resumen
The presence of walls with different reflectance in indoor facilities is a problem when
designing their lighting installations. This problem becomes more serious when one or more walls
are mirrors, a common situation in medical, sport, educative and many other indoor facilities. Even
if some programs can work with different approaches, the results are far from exact and, in many
cases, designers ignore the mirrors and work by eye, with results that are frequently excessive in
terms of illuminance on the working planes, glare and energy consumption and use of materials.
These deviations from the intended results are due to the direct or indirect estimation of reflectance
remarkably lower than 1 in the mirrored walls. In this framework of uncertainty, this work is
presented with the objective of developing an intuitive theoretical model based on the consideration
of virtual twin-spaces behind the mirrors. This proposal is not just an approach, but a useful tool
providing the input for any kind of calculation ranging from the lumen method, used in quick
pre-dimensioning, to the most complete calculations with computational methods. In addition, apart
from calculating the number of luminaires and photometric parameters, the use of virtual twin-rooms
also takes into account the extended field of vision of the users, including objects behind, and virtual
luminaries. This advantage has no precedent in the literature up to date.